#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# Copyright 2012 California Institute of Technology. ALL RIGHTS RESERVED.
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
# http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 
# United States Government Sponsorship acknowledged. This software is subject to
# U.S. export control laws and regulations and has been classified as 'EAR99 NLR'
# (No [Export] License Required except when exporting to an embargoed country,
# end user, or in support of a prohibited end use). By downloading this software,
# the user agrees to comply with all applicable U.S. export laws and regulations.
# The user has the responsibility to obtain export licenses, or other export
# authority as may be required before exporting this software to any 'EAR99'
# embargoed foreign country or citizen of those countries.
#
# Author: Brett George
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




def runUpdatePreprocInfo(self, use_dop="average"):
    from .runFdMocomp import runFdMocomp
    
    peg = self.insar.peg
    pegRc = peg.radiusOfCurvature
    referenceFrame = self.insar.referenceFrame
    secondaryFrame = self.insar.secondaryFrame
    prf1 = referenceFrame.getInstrument().getPulseRepetitionFrequency()
    prf2 = secondaryFrame.getInstrument().getPulseRepetitionFrequency()
    referenceDoppler = self.insar.referenceDoppler
    secondaryDoppler = self.insar.secondaryDoppler

    ## red flag.
    fd = runFdMocomp(self, use_dop=use_dop)
    
    averageDoppler = referenceDoppler.average(secondaryDoppler)
    averageDoppler.fractionalCentroid = fd
    self.insar.dopplerCentroid =averageDoppler
    return None
